The Signal Recovery Model 7210 provides a different dimension to lock-in Amplifier design. Until the introduction of the Model 7210, instruments have been restricted to a single signal channel, allowing only one, or at most two, signals to be measured at any one time. The Model 7210, with its use of new technology, allows up to 32 signals to be measured simultaneously. What is more, units can be linked together to give more detection channels. For example, four units give 128 channels, while sixteen would give 512 channels.

Since the invention of the lock-in amplifier, none has been more revered and trusted than the PAR124A by Princeton Applied Research. With over 50 years of experience, Signal Recovery (formerly Princeton Applied Research) offers the 7124: the only lock-in amplifier that has an all analog front end separated, via fiber, from the DSP main unit.

The Signal Recoverymodel 7230 is a new concept in general-purpose DSP lock-in amplifiers. It offers the excellent performance that users expect from our instruments but at a lower price than many competitive models. This improvement in price/performance ratio has been achieved by replacing the traditional control buttons and display with easy-to-use control panels that can be operated from any computer via your favorite browser.

The Signal Recovery model 7230 is a new concept in general-purpose DSP lock-in amplifiers. It offers the excellent performance that users expect from such instruments but at a lower price than many competitive models. This improvement in price/performance ratio has been achieved by replacing the traditional control buttons and display with easy-to-use control panels that can be operated from any computer via your favorite browser.

No longer do you need to be in front of the instrument to operate it - now you can set up your experiment in the lab but return to the office while it runs, monitoring what is happening via your computer. And if you need to make a change to a setting then it’s as easy as clicking a button on a web page. The model 7230 can even be operated via iPad, shown above.

In addition to the web control panels, the instrument can also be fully controlled from other software packages, such as Acquire, SRInstComms, orLabVIEW. These support experiments such as frequency response measurements, logging of instruments outputs over time, and integration with other experimental equipment.

Signal Recovery have released the model 7270 Dual-Phase DSP Lock-In Amplifier. The model 7270 sets a new standard for general-purpose DSP lock-in amplifiers. Signal Recovery have taken advantage of the developments in technology since the first DSP lock-in amplifiers were introduced in the early 1990’s to update the core design, but made sure that they've included all the best features of their model 7265 and 7280 instruments. The result is a lock-in amplifier of outstanding performance that is easy to use and suitable for all measurements over a frequency range extending from 1 mHz to 250 kHz.